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Create an ideal environment by continually replenishing your aquarium's concentration of trace elements and minerals. This all-natural denitrifier has been carefully formulated to include all the essential trace elements, minerals, and components necessary to maintain a successful aquarium. Miracle Mud also contains anaerobic microorganisms that denitrify the aquarium leading to a pristine home for your fishes and corals. Based on sound ecology, Miracle Mud is an efficient biological filter substrate. This mud is loaded with beneficial bacteria and life and results in an abundant natural food source for your reef community.